On Mar. 18, 2003, as U.S. soldiers started bombing Baghdad and looters across the country began plundering the country's museums, nearly $1 billion vanished from the Central Bank of Iraq. Authorities knew right away who took it — Qusay Hussein, the son of Iraq's fugitive-dictator Saddam Hussein. Qusay was killed in July during a three-hour gunfight with U.S. troops; Saddam was captured in December near ad-Dawr, where soldiers also discovered nearly $750,000 in fresh $100 bills. An additional $650 million was found hidden in the walls of Hussein's royal palace. The rest remains unaccounted for. Most officials believe the money is in the hands of the country's violent insurgency.